Voltage sag is considered the most costly PQ event. Basically, it affects most of the process...

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Electrical Engineering

Voltage sag is considered the most costly PQ event. Basically,it affects most of the process facilities in the plant. The EPD SDNBHD is a plastic plant. The plant is very diligent in monitoringthe power system. They identify the fact that the voltage sag hasoccurred over the past 5 years. The total number of voltage sag is14 events per year and causes damage to the facility. They alsoidentified the fact that they loss RM 120, 000 ringgit per eventdue to this equipment. The plant does post-event cleaning.
a) Explain with suitable justification which equipment has beenused by this plant to measure and record the occurrence of voltagesag in a year.

b) The management of the plant intends to double the size of theplant because they cannot keep up with the production. Suggest agood solution; how this plant could solve the PQ problem andminimize the loss.

c) The solution for part b) may be expensive, and they cannoteffort any capital for this solution. As a technical advisor howcould you convince the management of the plant such that they canlisten to you?

Answer & Explanation Solved by verified expert

3.8 Ratings (615 Votes)

a To Record the Voltage SagUninterruptible power supplies UPSs are extremely popular forcomputers personal computers central servers and processcontrolequipment For the latter equipment the costs of a UPS arenegligible compared to the total costs Motorgenerator sets areoften depicted as noisy and as needing much maintenance But inindustrial environments noisy equipment and maintenance on rotatingmachines are rather normal Large battery blocks also requiremaintenance expertise on which is much less available Voltagesource converters VSCs generate a sinusoidal voltage with therequired magnitude and phase by switching a de voltage in aparticular way over the three phases This voltage source can beused to mitigate See Answer

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